Backpack



FIG. 1 is a perspective view taken from the front, left side, and top side of the backpack of the present design, shown with its top opening in a closed position, in accordance with the present design.

FIG. 2 is another perspective view taken from the front, left side, and top side of the backpack of FIG. 1, shown with its top opening in an open position, in accordance with an aspect the present design.

FIG. 3 is a front elevation view of the backpack of FIG. 1.

FIG. 4 is a rear elevation view of the backpack of FIG. 1.

FIG. 5 is a left side elevation view of the backpack of FIG. 1.

FIG. 6 is a right side elevation view of the backpack of FIG. 1.

FIG. 7 is a top plan view of the backpack of FIG. 1; and,

FIG. 8 is a bottom plan view of the backpack of FIG. 1.

The dash-dash broken lines shown represent stitching and form part of the claimed design. Elements drawn in broken short/long dash lines are included for illustrating portions of the backpack, and form no part of the claimed design. 

CLAIM The ornamental design for a backpack, as shown and described. 